serialize f64 to string

lib/ain-ocean/src/model/transaction.rs

@@ -1,21 +1,24 @@
 use bitcoin::{BlockHash, Txid};
 use serde::{Deserialize, Serialize};
+use serde_with::{serde_as, DisplayFromStr};
 
 use super::BlockContext;
 
 pub type TransactionByBlockHashKey = (BlockHash, usize);
 
+#[serde_as]
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(rename_all = "camelCase")]
 pub struct Transaction {
-    pub id: Txid,
-    pub order: usize,
+    pub id: Txid, // unique id of the transaction, same as the txid
+    pub order: usize, // tx order
     pub block: BlockContext,
     pub hash: String,
     pub version: u32,
     pub size: u64,
     pub v_size: u64,
     pub weight: u64,
+    #[serde_as(as = "DisplayFromStr")]
     pub total_vout_value: f64,
     pub lock_time: u64,
     pub vin_count: usize,